Smooth, steady bubbles for happy tanks
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Give your fish and plants a gentle boost of oxygen.
This fine-pore air stone brings calm, even bubbles to your aquarium or hydroponic setup. It helps boost oxygen in the water so your fish breathe easier and your plants grow strong. It connects to standard 4 mm air tubing, making it simple to use in most tanks.
A small upgrade that makes a big difference.
✔ Adds steady oxygen to your water
✔ Works with most air pumps and tubing
✔ Great for aquariums and hydroponic systems
✔ Made from durable sintered gold-sand material
✔ Easy to rinse and reuse
Soak the air stone before first use. Rinse it once in a while to keep the bubbles flowing.
We are proud to offer duty-free, reliable, tracked shipping— delivered to your door in over 200 countries worldwide!
Below you can check our average shipping times:
Domestic USA Shipping: 2-9 business days
US & Canada: 7-18 days
Europe: 7-18 days
Europe Plus*: 8-30 days
Australia, New Zealand: 7-18 days
Hong Kong, Singapore: 7-18 days
Rest of the world: 8-30 days
*does not include processing times up to 2 business days or longer in peak periods
Primarily we ship out from fulfillment centers in the United States, Eastern Asia and Western Europe. If the item you've purchased is out of inventory in your nearest location, we'll send it directly from our production lines at the same delivery times as stated in our shipping section.
How do I set it up?
Just connect it to standard 4 mm air tubing and attach it to your air pump. Place it in the tank and you’re good to go.
Is it safe for fish?
Yes, the fine bubbles help improve oxygen levels for fish and plants.
Does it work with hydroponics?
Yes, it’s also great for adding oxygen to hydroponic reservoirs.
Fine pores create gentle bubbles that help keep water fresh and oxygen-rich.
Made from strong sintered gold-sand material for long-lasting use.
Connects to standard 4 mm tubing and most air pumps in minutes.
Perfect for aquariums, hydroponic tubs, and small aquaponic systems.
A quick rinse keeps bubbles smooth and steady.
Small size, big bubbles, happy tanks
| Features | MK Aquarium | Knock-Offs |
|---|---|---|
| Fits standard 4 mm tubing | ||
| Fine-pore bubble output | ||
| Durable sintered material | ||
| Reusable with simple rinsing | ||
| Works in aquariums and hydroponics | ||
| Smooth, even bubble flow | ||
| Reliable performance | ||
| Easy beginner-friendly setup |
If your pump uses standard 4 mm air tubing, it should connect without any trouble.
No, the stone itself is silent. Any sound comes from your air pump.
Give it a quick rinse whenever you notice the bubbles slowing down.
Yes, it works in both freshwater and saltwater aquariums.
No, it sinks on its own for easy placement.
Yes, the gentle bubbles work well in shrimp and nano tanks.
You can place it under light substrate, but make sure the bubbles can escape easily.
The fine pores stay clear with simple rinsing and good tank maintenance.
No, the white material stays neutral and won’t tint your water.
